Ultra-low space variable-amplitude portal lifting and transportation assembly equipment

The invention provides ultra-low space variable-amplitude portal lifting and transportation assembly equipment which comprises a portal structure and a lifting device, wherein the lifting device is symmetrically arranged on the portal structure and is used for connecting and lifting weights; the lifting device comprises a lifting fixed pulley block, lifting fixed pulley assemblies, a lifting movable pulley block, a lifting point variable-amplitude oil cylinder, horizontal movement oil cylinders, a lifting oil cylinder and a lifting point pulley. The lifting fixed pulley block is arranged on the lifting fixed pulley assemblies, and the lifting point variable-amplitude oil cylinder is arranged between the lifting fixed pulley assemblies. The lifting movable pulley block is connected with thelifting fixed pulley block through the lifting oil cylinder, and the lifting fixed pulley assemblies are connected with the portal structure through the horizontal movement oil cylinders. The liftingpoint pulley is connected